Metal working – Method of mechanical manufacture – Assembling or joining
Reexamination Certificate
2007-01-30
2007-01-30
Bryant, David P. (Department: 3726)
Metal working
Method of mechanical manufacture
Assembling or joining
C029S527100, C277S500000, C277S540000, C277S627000, C277S650000
Reexamination Certificate
active
11177388
ABSTRACT:
A method of forming a seal for a subterranean drilling tool employs irradiation. The seal is formed of a single homogeneous elastomeric material. The seal has an exterior surface with at least one portion that is in sliding engagement with part of a seal gland of the drilling tool. A property gradient is formed in the elastomeric material on at least this portion. The property gradient is formed by exposing the seal to an environment to define a property that changes from a first level to a second level without essentially changing the composition of the elastomeric material. The step of exposing is done by irradiating the seal with an electron beam.
REFERENCES:
patent: 3788654 (1974-01-01), Mandley
patent: 5362073 (1994-11-01), Upton et al.
patent: 5456327 (1995-10-01), Denton et al.
patent: 5842701 (1998-12-01), Cawthorne et al.
patent: 6026917 (2000-02-01), Zahradnik et al.
patent: 6142249 (2000-11-01), Zahradnik et al.
patent: 6684966 (2004-02-01), Lin et al.
Jiri George Drobny, Radiation Technology for Polymers, Published Nov. 25, 2002, CRC Press, pp. 1-4, 27-29, 63-70, 77-80.
Radiation Technology for Polymers, by Jiri George Drobny, CRC Press, pp. 1-4, 27-29, 63-70, 77-80.
Drobny Jiri George
Koltermann Terry J.
Smith Redd H.
Baker Hughes Incorporated
Bracewell & Giuliani LLP
Bryant David P.
Koehler Christopher M.
LandOfFree
Method for manufacturing a drilling tool with an elastomer... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for manufacturing a drilling tool with an elastomer..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for manufacturing a drilling tool with an elastomer... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3794789